ES2245423T3 - DRIVER CONNECTION TERMINAL. - Google Patents

Abstract

Conductor connection terminal with the following characteristics: a contact part (10) with a recess (12) for insertion of conductors and with a transverse hole (13), which cuts the recess for insertion of conductors; a clamping spring (1), which has three arms (2, 3, 4), namely a clamping leg (2) with a through hole (5), a tension arm (3) and a support arm (4), in which the clamping arm (2) sits displaceably in the transverse hole (13) and offers in a tensioned position for the clamping spring (1) the passage hole (5) in alignment with the recess (12) for insertion of conductors, so that the conductor (20) can be inserted, the parts of the wall of the side bands (14-17) being present in the recess (12) for insertion of conductors and in the transverse hole (13) of the contact part (10) as well as being one of these parts of the wall, designated as part of the support wall (14), adjacent to the support arm (4) of the clamping spring ( one); and wherein the clamping arm (3) in its release position, pulls the clamping arm (2) in the direction of the part of the support wall (14), to fix an inserted conductor.

Description

Terminal connection of conductors.

The invention relates to a connection terminal of conductors with a contact part and with a clamping spring of according to the preamble of claim 1.

In the case of a connection terminal and / or Screwless communication (DE A 26 19 035), the contact part it has a transverse hole, which is configured as a groove, and the clamping spring has at one end a recess of the type of window with arm of subjection, that surrounds the part of contact with engage in the groove, while the other end of the spring clamp fits into another groove of the contact part, to fix the clamping spring in the contact part. Clamping arm is guided in the groove of the transverse hole in such a way that you can press a line introduced against the wall of the part of Contact. A connection terminal of this type is not easy to manufacture and to ride.

Screwless connection terminals are known using a cage traction spring (DE A 27 06 482, DE A 34 18 536, DE U 94 15 076 as well as DE A 0 632 529), in which one of the ends of the pier fit into a window-type recess of the other elastic spring, to form a tensioned spring loop. The fixing of the clamping spring on the contact part can be perform through a contact piece, which represents a additional piece, which represents an important cost factor With a mass article.

In another connection terminal (DE 198 33 610 C1), the clamping spring has a tension bushing, with which you can pressurize and recess in a transverse hole of the contact part The manufacturing cost of this connection terminal It is considerable.

They are known from JP 6-132042A in "Patents Abstract of Japan" E-1589, August 5, 1994, Vol. 18, No. 419, conductor connection terminals according to the preamble of the claim 1, which serve to connect two lines aligned with each other. A rail is provided as a contact part U-shaped coupling with two clamp springs, whose clamping arms are provided in each case with a recess and a lapel-shaped clamping piece, which extend into each case through grooves in the U-shaped rails that fix a thread inside the U. The U-shaped coupling rail does not offers an insertion recess of conductors of the type of drill and groove for clamping arms offers no transverse hole of the channel type, since the parts of wall of the side bands of the contact part is not extend around the introduction hole of the conductors and of the slot-shaped transverse hole.

The invention has the task of creating a terminal conductor connection, which can be manufactured and assembled in one simple and economical way and that is suitable for mounting on electric plug devices. The proposed task is solved under the features of claim 1 and that is configured and developed through the other features of the dependent claims.

In particular, a transverse hole of the type of channel crosses the contact part and forms a guide for the clamping arm of the clamping spring, which has a hole for the driver to fix. The clamping spring can be carried a position, in which the through hole is aligned with the insertion recess of conductors, and in this position you introduces the driver and is fixed through the loosening of the clamping spring The tensile force on the clamping arm It is applied through the clamping spring, which is supported by its arm of support on the outer side of the contact part, so that no additional groove or a drill is needed for the housing of a means for fixing the clamping spring.

In a preferred embodiment of the invention, a spring is used as a clamping spring folded triangle-shaped clamp, which is folded to form a loop, extending the end of the clamping arm more from the end of the support arm. The angle between this arm of support and the support arm is between approximately 85º and 60º of according to the inclination of the transversal drill with respect to the axis of the contact part. The clamping arm passes to the arm tensioner with an arc, and another arc passes from the tensioner arm towards the support arm The angle of the tension arm with respect to the arm of restraint or with respect to the support arm is, in general, 45º ± 15º.

With the contact part as an element of pin type or socket type contact, the terminal of conductor connection is suitable especially for mounting on electrical plug devices. A contact element of this type with the recess of insertion of conductors in the alignment axial element and a transverse hole can be manufactured in an individual automatic device. The clamping spring is preassembled in the contact element, and a contact activator deals with that the contact spring can be brought to a position, which is ready for a quick connection of a conductor.

The invention is described below with the Drawing help. In this case:

Figure 1 shows a longitudinal section a through a clamping spring.

Figure 2 shows a top view on the clamping spring.

Figure 3 shows a connection terminal with mounting spring mounted, partially in section and with a retention slide.

Figure 4 shows a top view on the connection terminal.

Figure 5 shows a contact element with clamping spring and activation lever in a first position.

Figure 6 shows it in a second position Y

Figure 7 shows it with driver mounted.

Figure 1 shows a clamping spring 1, which It has three arms, namely a clamping arm 2 with hole oval or D-shaped window, a tension arm 3, which is connected through a tensioning arch 8 with clamping arm 2, and a support arm 4, which is connected through another tensioning arch 8 with the support arm 3. The support arm 4 is arched to the rounding adaptation of a contact part 10, to support in this. In addition, an appendix 4aa may be provided (figures 5 a 7) on the support arm 4, which extends to the opening of the window 5, to stabilize the clamping spring 1 in position starting (figure 5). In the relaxed state, the clamping spring represented has a closed angle between arms 2 and 3 of 45 °. You can deviate from this value up and down.

The contact part 10 (figures 3 and 4) is configured as contact pin or contact socket and it has a connecting head 11, which has a recess 12 of insertion of conductors as well as a transverse hole 13. The recess 12 sits in the center or out of the center for the shaft longitudinal connection terminal, so that parts are obtained of wall 14 and 15 of the same thickness or of different thickness. He cross hole 13 passes through the contact part 10 in the form of channel, with a cross section of the type of the type of drill elongate. The recess 12 and the transverse hole 13 are intersect each other, as best deduced from figures 3 and 4, wall portions of the side bands 17, 18 remaining in the side of the transverse hole 13, which ensure the stability of head 11 of the connection terminal. The angle of intersection between holes 12 and 13 may be 90 ° or less, where in the case of a 45º clamping spring angle between arms 2 and 3 of the clamping spring, the angle of inclination of the channel, measured between the perpendicular on the main axis and the axis of symmetry of the transverse hole 13, is in the range between 5 and 30º. The interval between 10 and 20º is preferred for this tilt angle of the channel. An example performed had a tilt angle of 12º30 '.

In figures 3 and 5 to 7 they are represented Schematic assembly examples for the new connection terminal. The heads 11 of the connection terminals are seated on a plate retention 36, which has cavities 37 for the housing respective of a head 11 of the connection terminals. To the cavities 37 lead first access holes 38 and seconds access holes 39. The first access holes 38 are aligned with the recesses 12 and the second access holes 39 receive in each case a contact activator 40. The activators respective contact 40 are configured in Figure 3 as retaining slides with a deeper groove 41 and with a minor recess 42. The contour of the groove 41 follows approximately the contour of the clamping arm 3 and a section of the tensioning arch 4 of the clamping spring 1. When the actuator contact 40 adopts its superior position, in which it introduces press with its groove 42 the clamping spring 1 to the maximum in the cross hole 13, the opening of the window 5 is aligned with the recess 12.

The mounting of conductor 20 on the terminal of connection 10 is made because the insulated end 21 of the conductor 20, which is constituted in the case represented in Figure 7 by a bundle of wires. It fits into the recess 12 and through the window opening 5. The spring is then released clamping 11 and the edge of the window opening 5 displaces the conductive wires 21 against the inner side of the section of wall 14, mainly in the area of the transverse hole 13 of the side of entada. Individual wires 21 are distributed through of the cylindrical inner side 14 of the wall and pressed against this one, so that a good current transmission is predictable between the conductor 20 and the contact part 10.

Figures 5 to 7 show a second form of implementation of the contact activator 40. This is constituted by a retention lever, which can be rotated over a point of retention 45, to keep the clamping spring 1 in position of availability for the accommodation of drivers, as depicted in figure 6. In this position, hole 5 in the clamping arm 2 and the recess 12 in the contact element 10 are aligned with each other, so that a conductor 20 is inserted and is held after the rotation of the lever 40 backwards, as shown in figure 7.

Although the use of activators is preferred contact, it is also possible to dispense with such activators contact and compress the clamping springs during the assembly of the conductors 20 in each case by means of an elongated object, by example a screwdriver, to carry out the alignment between the window opening 5 and the recess 12.

Claims (10)

1. Conductor connection terminal with the following features: a contact part (10) with a recess (12) for insertion of conductors and with a transverse hole (13), which cuts the recess (12) of insertion of conductors; a clamping spring (1), which has three arms (2, 3, 4), namely a clamp leg (2) with a hole step (5), a tension arm (3) and a support arm (4), in which the clamping arm (2) sits in a movable way in the cross hole (13) and offers in a tensioned position for the clamping spring (1) the through hole (5) in alignment with the recess (12) for insertion of conductors, so that you can insert the conductor (20), the parts of the wall being present of the side bands (14-17) in the recess (12) for insertion of conductors and in the transverse hole (13) of the contact part (10) as well as being one of these parts of the wall, designated as part of the supporting wall (14), adjacent to the support arm (4) of the clamping spring (1); Y wherein the clamping arm (3) in its release position, pulls the clamping arm (2) in the direction of the part of the supporting wall (14), to fix an inserted conductor (20), characterized in that the contact part (10) is configured as contact element of plug type or socket type for a connector, because the transverse hole (13) of the element of contact passes through the contact element (10) in the form of a channel and in the direction of movement of the clamping arm (2), the parts of the wall of the lateral bands remaining (14 - 17) around the recess (12) of insertion of conductors and around the transverse hole (13) of the contact piece, Y the transverse hole (13) forms a guide for the clamping arm (2) of the clamping spring (1), until it it reaches the position of availability for the reception of the conductors, in which the through hole (5) is aligned with the driver insertion hole (12), after which you can press a conductor (21) coupled to the recess (12) for insertion of conductors and through the through hole (5) from the edge of the through hole (5) towards the wall of the contact part (10) 2. Conductor connection terminal according to claim 1, characterized in that the transverse hole (13) of the channel type has a cross section of the elongated hole type and extends inclined with respect to the main longitudinal axis of the conductor connection terminal, the transverse bore (13) and the part of the support wall (14) forming an angle of inclination less than 90 °. 3. conductors connecting terminal according to claim 1 or 2, characterized in that the support arm (4) is arched in adaptation to the rounding of the contact element (10). 4. Conductor connection terminal according to one of claims 1 to 3, characterized in that the through hole (5) of the clamping arm (2) of the clamping spring (1) has an oval or D-shaped cross-section. 5. Conductor connection terminal according to one of claims 1 to 4, characterized in that the support arm (4) has an appendix (4a) that extends into the window opening (5). 6. Conductor connection terminal according to one of claims 1 to 5, characterized in that the axis of the conductor insertion recess (12) extends offset with respect to the axis of the contact part (10), the part being configured of the support wall (14) thicker than the part of the wall (15) facing it. 7. Conductor connection terminal according to one of claims 1 to 6, characterized in that the clamping arm (2) and the tensioning arm (3) are connected to each other through a tensioning arc (8) and form an angle in the interval of 30º to 60º from each other and because the support arm (4) is arranged in the angular range of 85º to 60º with respect to the support arm (2). 8. A conductor connection terminal according to one of claims 1 to 7, characterized in that a contact activator (40) is associated with each clamping spring (1), which can take two positions, a tensioning position for the clamping spring (1), in which a conductor (20) to be connected can be coupled through the through hole (5) of the clamping arm (2) and inside the recess (12) of the conductor insertion, and a release position, in which the holding spring (1) holds the conductor (20) inserted against the wall (14) of the recess (12) for insertion of conductors, and because retention means (42; 45) are provided. , to maintain the tension position of the clamping spring (1) for the position of availability for the reception of the conductors. 9. Conductor connection terminal according to claim 8, characterized in that the contact activator (40) is a retention slide with a deeper groove (41) and with a smaller groove (42), determining these grooves (41, 42 ) the two positions of the retention slide in collaboration with the clamping spring (1). 10. A conductor connection terminal according to claim 8, characterized in that the contact activator (40) is a retention lever, which can be rotated through a retention point (45) to the spring release position.